61 mm CNC‑Machined Aluminium Modified Bearing Wheel — Replacement for Folding Bicycles Key benefits Smooth, stable ride: The 61 mm diameter modified bearing wheel improves rolling performance and stability for city riding and travel. Better grip and comfort: Upgraded 3 mm thick square rubber ring delivers durable traction and shock absorption on uneven pavement without adding extra weight. Precise, reliable construction: CNC‑machined from lightweight, ‑strength aluminium alloy with a polished surface for dimensional accuracy and everyday durability. Fast, tool‑ replacement: Installs with a standard M6x16 screw; no specialty tools required, enabling quick swaps for worn wheels or upgrades. What it is Wheel type: 61 mm diameter modified bearing rolling wheel for folding bicycles. Material: CNC‑machined aluminium alloy body with a 3 mm thick square rubber ring. Mounting: Simple M6x16 screw installation. Why you need it Restore worn wheels quickly and easily to maintain safe, efficient rolling. Reduce vibration and improve comfort over rough sidewalks, cobblestones, or uneven bike paths. Keep your folding bike compact and reliable for daily commuting or travel without compromising performance. Compatibility and performance notes Designed for folding bicycles that accept a 61 mm replacement wheel and M6x16 screw mounting. Modified bearing design enhances smooth rotation and low rolling resistance. Lightweight aluminium construction balances strength and portability for frequent use. Practical uses Urban commute: worn wheels to regain smooth rolling and stable handling for daily trips on mixed road surfaces. Travel with a folding bike: Improve ride comfort and maintain packing readiness when transporting your bike on trains or in vehicles. On‑the‑spot maintenance: Quick M6x16 screw swap lets you change a damaged or degraded wheel during a ride or between trips. Specifications (as provided) Diameter: 61 mm Bearing: Modified bearing wheel Rubber ring thickness: 3 mm (square rubber ring) Body: CNC‑machined aluminium alloy, polished surface Mounting screw: M6x16 Simple, reliable replacement wheel engineered for folding bicycles — improved grip, smoother rolling, and easy installation.